<template>
  <!--容器-->
  <el-container class="home-container">
  <!--头部区域-->
  <el-header>
    <div>
      <img src="../assets/heima.png" alt="">
      <span>电商后台管理系统</span>
    </div>
    <el-button type="info" @click="logout">退出</el-button>
  </el-header>
  <!--页面主体-->
  <el-container>
  <!--侧边栏-->
    <el-aside :width="isCollapse?'64px':'200px'">
    <div class="toggle-button" @click="toggleCollapce">
    <i :class="isCollapse?'el-icon-d-arrow-right':'el-icon-d-arrow-left'"></i>
    </div>
    <!--侧边栏菜单区域-->
    <el-menu background-color="#333744" text-color="#fff" active-text-color="#409EFF" unique-opened :collapse="isCollapse" :collapse-transition="false" router :default-active="activePath">
      <!--一级菜单-->
      <el-submenu :index="item.id+''" v-for="item in menulist" :key="item.id">
      <!--一级菜单的模版区域-->
        <template slot="title">
        <!--图标-->
          <i :class="iconsObj[item.id]"></i>
          <!--文本-->
          <span>{{item.authName}}</span>
        </template>
         <!--二级菜单-->
        <el-menu-item :index="'/'+subItem.path" v-for="subItem in item.children" :key="subItem.id" @click="saveNavState('/'+subItem.path)">
          <template slot="title">
        <!--图标-->
          <i class="el-icon-menu"></i>
          <!--文本-->
          <span>{{subItem.authName}}</span>
        </template></el-menu-item>
      </el-submenu>
    </el-menu>
    </el-aside>
    <!--右侧内容-->
    <el-main>
    <router-view></router-view>
    </el-main>
  </el-container>
</el-container>
</template>

<script>
export default {
  data () {
    return {
      menulist: [],
      iconsObj: {
        125: 'iconfont icon-yonghu',
        103: 'iconfont icon-kongjian',
        101: 'iconfont icon-shangpingouwudai2',
        102: 'iconfont icon-danju-tianchong',
        145: 'iconfont icon-baobiao'
      },
      isCollapse: false,
      activePath: ''
    }
  },
  created () {
    this.getMenuList()
    this.activePath = window.sessionStorage.getItem('activePath')
  },
  methods: {
    logout () {
      window.sessionStorage.clear()
      this.$router.push('/login')
    },
    async getMenuList () {
      const { data: res } = await this.$http.get('menus')
      if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
      this.menulist = res.data
    },
    toggleCollapce () {
      this.isCollapse = !this.isCollapse
    },
    saveNavState (activePath) {
      window.sessionStorage.setItem('activePath', activePath)
      this.activePath = activePath
    }
  }
}
</script>

<style lang="less" scoped>
.home-container{
  height: 100%;
}
.el-header{
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  padding-left: 0;
  align-items: center;
  color: #fff;
  font-size: 20px;
  > div{
    display:flex;
    align-items: center;
    span{
      margin-left: 15px;
    }
  }
}
.el-aside{
background-color: #333744;
.el-menu{
  border-right: none;
}
}
.el-main{
background-color: #eaedf1;
}
.iconfont{
  margin-right: 10px;
}
.toggle-button{
  background-color: #4a5064;
  line-height: 30px;
  color: #fff;
  text-align: center;
  cursor: pointer;
}
</style>
